<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        a {
            background-color: #0b2b35;
        }
        a:link{
            color: white;
            text-decoration: none;
            padding-left: 5px; ;
            padding-right: 5px; ;
            margin-top: 20px;
        }
    </style>
</head>
<body>
<a href="#">1</a>
<a href="#">2</a>
<a href="#">3</a>
<a href="#">4</a>
</body>
</html>